NON-ISOLATED DC/DC CONVERTERS
8.3 Vdc - 14 Vdc Input
VRBC-16A1Ax
•
0.75 Vdc - 5.5 Vdc/16 A Output
RoHS Compliant
•
Non-Isolated
Rev.A
Under-voltage Lockout (UVLO)
•
High Efficiency
•
Over Temperature Shutdown
•
High Power Density
•
OCP/SCP
•
Excellent Thermal Performance
•
Wide Input
•
Low Cost
•
Wide Trim
•
Fixed Frequency
•
Remote On/Off
•
Able to Sink & Source Current
•
Active Low/High (option)
•
Vout Prebias
•
Remote Sense
•
Industrial Temperature Range
Description
The Bel VRBC-16A1Ax is part of the non-isolated dc/dc converter Power Module series. The modules use a SIP
package. These converters are available in a range of output voltages from 0.75 Vdc to 5.0 Vdc over a wide
range of input voltage (Vin = 8.3 Vdc - 14 Vdc).The efficiency is typically 92% at 3.3 Vout at full load.
Part Selection
Output
Voltage
Input
Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Model Number
Active Low
Model Number
Active High
0.75 V - 5.5 V
8.3 V - 14 V
16 A
80 W
94%
VRBC-16A1AL
VRBC-16A1A0
Notes: 1.Change the last character to “C” to indicate 0.20’’ pin length and active low.
2. Add “G” suffix at the end of the model number to indicate Tray Packaging.
3. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
Absolute Maximum Ratings
Parameter
Min
Typ
Max
Input Voltage (continuous)
-0.3 V
-
15 V
Output Enable Terminal Voltage
-0.3 V
-
15 V
Ambient Temperature
-40 °C
-
85 °C
Storage Temperature
-55 °C
-
125 °C
Notes
Note: All specifications are typical at 25 °C unless otherwise stated.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
8.3 Vdc - 14 Vdc Input
0.75 Vdc - 5.5 Vdc/16 A Output
Input Specifications
Parameter
Min
Typ
Max
Notes
8.3 V
8.3 V
12 V
12 V
14 V
13.2 V
Input Voltage
Vo, set≤3.63 V
Vo, set >3.63 V
1
Input Current (full load)
-
-
11 A
Input Current (no load)
-
100 mA
-
Remote Off Input Current
-
2 mA
-
Input Reflected Ripple Current (rms)
-
-
150 mA
Input Reflected Ripple Current (pk-pk)
-
-
400 mA
I t Inrush Current Transient
-
0.2 A s
0.4 A s
Turn-on Voltage Threshold
-
7.8 V
-
Turn-off Voltage Threshold
-
7.3 V
-
2
2
With simulated source impedance of
1000 nH, 5 Hz to 20 MHz, use a 1000
uF/25 V AL-Cap with ESR=0.03 ohm
max and 6 x 47 uF/16 V tantalum cap
with ESR=0.013 ohm max, at 100 kHz
2
Notes: 1.This power module is not internally fused. An input line fuse must always be used.
All specifications are typical at 25 °C unless otherwise stated.
Output Specifications
Parameter
Min
Typ
Max
-2% Vo,set
-
2% Vo,set
Load Regulation
-
0.2% Vo,set
-
Io=Io, min to Io, max
Line Regulation
-
0.3% Vo,set
-
Vin=Vin, min to Vin, max
Regulation Over Temperature
(-40°C to +85°C)
-
0.3% Vo,set
-
Tref=Ta, min to Ta, max
0A
-
16 A
-
180% Io,out
Output Voltage Set Point
Output Current
Current Limit Threshold
2
2
Short Circuit Surge Transient
-
1A s
3A s
Ripple and Noise (pk-pk)
-
50 mV
100 mV
Ripple and Noise (rms)
-
30 mV
45 mV
Turn on Time
-
8 mS
20 mS
Overshoot at Turn on
-
-
1% Vo,set
0 uF
-
5000 uF
-
100 mV
-
-
80 uS
-
-
100 mV
-
-
80 uS
-
Output Capacitance
Notes
Vin=12 V, full load
Tested with 0-20 MHz, 10 uF
tantalum capacitor &1 uF
ceramic capacitor at the output
ESR≥10 mohm
Transient Response
50% ~ 100% Max Load
Settling Time
100% ~ 50% Max Load
Settling Time
All
di/dt=2.5 A/uS; Vin=12 V; and
with 330 uF tantalum
capacitors at the output
Note: All specifications are typical at nominal input, full load at 25 °C unless otherwise stated.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
8.3 Vdc - 14 Vdc Input
0.75 Vdc - 5.5 Vdc/16 A Output
General Specifications
Parameter
Min
Typ
Max
-
94%
92%
90%
88%
87%
85%
78%
-
250 kHz
280 kHz
310 kHz
-
130 °C
-
0.7525 V
-
5.5 V
-
-
0.5 V
Notes
Efficiency
Vo=5.0 V
Vo=3.3 V
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
Vo=0.75 V
Switching Frequency
Over Temperature Shutdown
1
Output Trim Range (Wide Trim)
Remote Sense Compensation
MTBF
Measured at Vin=12 V, full load
Calculated Per Bell Core SR-332 (IO = 80%
load; Vin=12 V; Vo=3.3 V; Ta = 25 °C)
4,619,490 hours
Dimensions
Inches (L × W × H)
Millimeters (L × W × H)
Weight
-
2.0x 0.5 x 0.32
50.8 x 12.7 x 8.13
7.1 g
-
Notes: All specifications are typical at 25 °C unless otherwise stated.
1. The Tref temperature measurement location:
Control Specifications
Parameter
Remote On/Off
Min
Typ
Max
Signal Low (Unit Off)
-0.2 V
-
0.3 V
Signal High (Unit On)
-
-
Vin, max
Signal Low (Unit On)
-0.2 V
-
0.3 V
Signal High (Unit Off)
2.5 V
-
Vin, max
Notes
VRBC-16A1A0; Remote On/Off pin open, Unit
on.
VRBC-16A1AL; Remote On/Off pin open, Unit
on.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
8.3 Vdc - 14 Vdc Input
0.75 Vdc - 5.5 Vdc/16 A Output
Remote On/Off
For Active High Modules (Positive Logic)
When the transistor Q1 is in the Off state,
the power module is ON.
When the transistor Q1 is turned On,
the power module is OFF.
Vin
Vin
Module
Remote On/Off
Q1
GND
GND
For Active Low Modules (Negative Logic)
When the transistor Q1 is in the Off state,
the power module is OFF.
Vin
Vin
Module
R
When the transistor Q1 is turned On,
the power module is ON.
Remote On/Off
Q1
GND
GND
Output Trim Equations
Equation for calculating the trim resistor given the desired output voltage (Vo) is shown below. Rtrim is the
required resistance between the trim pin and GND pin, Vtrim is the required voltage between the trim and GND
pin.
10500
⎡
⎤
R trim = ⎢
− 1000 ⎥
⎣ Vo − 0 . 7525
⎦
Vo (V)
0.7525
1.2
1.5
1.8
2.5
3.3
5.0
Rtrim (KΩ)
Open
22.46
13.05
9.024
5.009
3.122
1.472
Vout
Sense
Module
trim
Rtrim
GND
Vtrim={0.7 −0.0667×(Vo−0.7525)}
Vo (V)
0.7525
1.2
1.5
1.8
2.5
3.3
5.0
Vtrim (V)
Open
0.67
0.65
0.63
0.583
0.53
0.42
Vout
Sense
Module
trim
Vtrim
GND
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
8.3 Vdc - 14 Vdc Input
0.75 Vdc - 5.5 Vdc/16 A Output
Efficiency Data
Module 3.3V
0.98
0.96
0.94
0.92
0.9
0.88
0.86
0.84
2.0
0.96
0.94
8.3V
12.0V
13.2V
Efficiency
Efficiency
Module 5.0V
8.3V
12.0V
14.0V
0.92
0.9
0.88
0.86
4.0
6.0
8.0
10.0
12.0
14.0
0.84
2.0
16.0
4.0
6.0
Output Current
Efficiency
96.0%
94.0%
92.0%
90.0%
88.0%
86.0%
84.0%
6.0
8.0
12.0
14.0
16.0
0.94
0.92
0.9
0.88
0.86
0.84
0.82
0.8
8.3V
12.0V
14.0V
4.0
10.0
Module 1.8V
Module 2.5V
2.0
8.0
Output Current
10.0 12.0 14.0 16.0
8.3V
12.0V
14.0V
2
4
6
8
10
12
14
16
Output current
Module 1.2V
Module 1.5V
0.94
0.92
0.9
0.88
0.86
0.84
0.82
0.8
0.78
0.92
0.9
0.88
0.86
0.84
0.82
0.8
0.78
0.76
8.3V
12.0V
14.0V
2
4
6
8
10
12
14
16
8.3V
12.0V
14.0V
2
4
6
8
10
12
14
Module 0.75V
0.9
0.85
0.8
0.75
0.7
0.65
0.6
0.55
0.5
8.3V
12.0V
14.0V
2
4
6
8
10
12
14
16
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
16
NON-ISOLATED DC/DC CONVERTERS
8.3 Vdc - 14 Vdc Input
0.75 Vdc - 5.5 Vdc/16 A Output
Thermal Derating Curves
Vo=0.75 V; Vin=12.0 V
Vo=1.8 V; Vin=12.0 V
Vo=3.3 V; Vin=12.0 V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
8.3 Vdc - 14 Vdc Input
0.75 Vdc - 5.5 Vdc/16 A Output
Ripple and Noise Waveforms
Ripple and noise at full load, 12 Vdc input, 5.0 Vdc output
Ripple and noise at full load, 12 Vdc input, 3.3 Vdc output
Ripple and noise at full load, 12 Vdc input, 0.75 Vdc output
Note: External load with 10uF tantalum capacitor and 1uF ceramic at the output, and Ta=25 deg C.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
8.3 Vdc - 14 Vdc Input
0.75 Vdc - 5.5 Vdc/16 A Output
Transient Response Waveforms
External load capacitor Cext=0 uF, di/dt=2.5 A/us
50% to 100% load Transient at 5.0 Vdc output
100% to 50% load Transient at 5.0 Vdc output
50% to 100% load Transient at 3.3 Vdc output
100% to 50% load Transient at 3.3 Vdc output
50% to 100% load Transient 0.75 Vdc output
100% to 50% load Transient at 0.75 Vdc output
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
8.3 Vdc - 14 Vdc Input
0.75 Vdc - 5.5 Vdc/16 A Output
Transient Response (continued)
External load capacitor Cext=330 uF Tantalum capacitor, di/dt=2.5 A/us
50% to 100% load Transient at 5.0 Vdc output
100% to 50% load Transient at 5.0 Vdc output
50% to 100% load Transient at 3.3 Vdc output
100% to 50% load Transient at 3.3 Vdc output
50% to 100% load Transient 0.75 Vdc output
100% to 50% load Transient at 0.75 Vdc output
Note: All specifications are typical at 12Vdc input and Ta=25 deg C.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
8.3 Vdc - 14 Vdc Input
0.75 Vdc - 5.5 Vdc/16 A Output
Mechanical Outline
Pin Connections
Pin
Function
1
Vo
2
Vo
3
Sense+
4
Vo
5
Ground
6
Ground
7
Vin
8
Vin
9
N/A
10
Trim
11
Remote On/Off
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and
other hazardous substances from electronic products.
©2007 Bel Fuse Inc. Specifications subject to change without notice. 011607
CORPORATE
FAR EAST
EUROPE
Bel Fuse Inc.
206 Van Vorst Street
Jersey City, NJ 07302
Tel 201-432-0463
Fax 201-432-9542
www.belfuse.com
Bel Fuse Ltd.
8F/ 8 Luk Hop Street
San Po Kong
Kowloon, Hong Kong
Tel 852-2328-5515
Fax 852-2352-3706
www.belfuse.com
Bel Fuse Europe Ltd.
Preston Technology Management Centre
Marsh Lane, Suite G7, Preston
Lancashire, PR1 8UD, U.K.
Tel 44-1772-556601
Fax 44-1772-888366
www.belfuse.com